[INFO] fetching crate futures-backoff 0.1.0...
[INFO] testing futures-backoff-0.1.0 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate futures-backoff 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate futures-backoff 0.1.0 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-backoff 0.1.0
[INFO] finished tweaking crates.io crate futures-backoff 0.1.0
[INFO] tweaked toml for crates.io crate futures-backoff 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f1a0d7ff907a3ec09df95f7341a2fbb8d14be1115f7a94aefc682c82a6a68e8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2f1a0d7ff907a3ec09df95f7341a2fbb8d14be1115f7a94aefc682c82a6a68e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f1a0d7ff907a3ec09df95f7341a2fbb8d14be1115f7a94aefc682c82a6a68e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f1a0d7ff907a3ec09df95f7341a2fbb8d14be1115f7a94aefc682c82a6a68e8", kill_on_drop: false }`
[INFO] [stdout] 2f1a0d7ff907a3ec09df95f7341a2fbb8d14be1115f7a94aefc682c82a6a68e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 424665aea1856e9cadef4f87e7cd7279959d351deb6c0d57a1b08806e373fa51
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "424665aea1856e9cadef4f87e7cd7279959d351deb6c0d57a1b08806e373fa51", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-timer v0.1.1
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling futures-backoff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "424665aea1856e9cadef4f87e7cd7279959d351deb6c0d57a1b08806e373fa51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "424665aea1856e9cadef4f87e7cd7279959d351deb6c0d57a1b08806e373fa51", kill_on_drop: false }`
[INFO] [stdout] 424665aea1856e9cadef4f87e7cd7279959d351deb6c0d57a1b08806e373fa51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6cf6d5a4549f82c8e09d7310c0b8b9a8dcee4cc885cd23be459847acc2597720
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6cf6d5a4549f82c8e09d7310c0b8b9a8dcee4cc885cd23be459847acc2597720", kill_on_drop: false }`
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling quickcheck v0.6.2
[INFO] [stderr]    Compiling futures-backoff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.35s
[INFO] running `Command { std: "docker" "inspect" "6cf6d5a4549f82c8e09d7310c0b8b9a8dcee4cc885cd23be459847acc2597720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cf6d5a4549f82c8e09d7310c0b8b9a8dcee4cc885cd23be459847acc2597720", kill_on_drop: false }`
[INFO] [stdout] 6cf6d5a4549f82c8e09d7310c0b8b9a8dcee4cc885cd23be459847acc2597720
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 30b48983deb77cf01792bb72c3c0f5adec54caf3e8e4eee58a855a72bdc05ef2
[INFO] running `Command { std: "docker" "start" "-a" "30b48983deb77cf01792bb72c3c0f5adec54caf3e8e4eee58a855a72bdc05ef2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/futures_backoff-18d4b53211809bbe)
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test future::tests::attempts_just_once ... ok
[INFO] [stdout] test strategy::exponential_returns_multiples_of_100ms ... ok
[INFO] [stdout] test strategy::exponential_stops_increasing_at_max_delay ... ok
[INFO] [stdout] test strategy::fibonacci_returns_max_when_max_less_than_base ... ok
[INFO] [stdout] test strategy::fibonacci_returns_the_fibonacci_series_starting_at_10 ... ok
[INFO] [stdout] test strategy::fibonacci_stops_increasing_at_max_delay ... ok
[INFO] [stdout] test strategy::fixed_returns_delay ... ok
[INFO] [stdout] test strategy::exponential_returns_max_when_max_less_than_base ... ok
[INFO] [stdout] test strategy::exponential_returns_multiples_of_10ms ... ok
[INFO] [stdout] test strategy::jitter::apply_jitter_quickcheck ... ok
[INFO] [stdout] test future::tests::attempts_retry_only_if_given_condition_is_true ... ok
[INFO] [stdout] test future::tests::attempts_until_max_retries_exceeded ... ok
[INFO] [stdout] test future::tests::attempts_until_success ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.30s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests futures-backoff
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - (line 19) ... ok
[INFO] [stdout] test src/lib.rs - retry_if (line 87) ... ok
[INFO] [stdout] test src/lib.rs - retry (line 60) ... ok
[INFO] [stdout] test src/strategy/mod.rs - strategy::Strategy (line 29) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.41s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "30b48983deb77cf01792bb72c3c0f5adec54caf3e8e4eee58a855a72bdc05ef2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30b48983deb77cf01792bb72c3c0f5adec54caf3e8e4eee58a855a72bdc05ef2", kill_on_drop: false }`
[INFO] [stdout] 30b48983deb77cf01792bb72c3c0f5adec54caf3e8e4eee58a855a72bdc05ef2